饲喂β-酪啡肽对大鼠免疫功能影响的研究   总被引：10，自引：1，他引：9  

周文华  陈伟华  邹思湘  张源淑  冉宏志 《畜牧与兽医》2002,34(2):13-15

β 酪啡肽 (β Casomorphinβ CM)是 β 酪蛋白经过酶解所释放的一类小肽 ,具有类似阿片肽的功能。试验通过饲喂 2种 β 酪啡肽 (β Casomor phin 7,β CM 7) ,和β Casomorphin 3 (β CM 3)来探索其对动物机体免疫活性的影响 ,并以谷胱甘肽 (GSH)作为肽参照组。试验选用SD雄性健康成年大鼠 ,分 3个肽组 (β Casomorphin 7,β Casomorphin 3,GSH)和 1个未给药对照组 ,每组 1 0只。 3种肽均以 1 2× 1 0 - 6 mol/L的浓度添加于饮水中 ,饲喂 3周后 ,分别进行试验检测。淋巴细胞转化试验 (LTT) (n =6)结果表明 :平均刺激指数 (SI)对照组为 1 99;β CM 7组为 2 56 ;β CM 3组为 3 2 3;GSH组为 2 46。3个肽组相对对照组SI有提高趋势 ,其中 β CM 3组相对对照组差异接近显著 (P =0 0 8)。红细胞免疫试验 (EIT ,n=6)测出各组红细胞C3b受体花环率各为 :对照组 4 9% ,β CM 7组 1 6 7% ,β CM 3组 1 5 9% ,GSH组 1 4 7%。 3个肽组相对于对照组均极显著升高 (P <0 0 1 )。腹腔巨噬细胞吞噬活性试验 (MTT ,n =6)测出各组平均OD570 分别为 :对照组 0 2 1 ;β CM 7组 0 2 2 ;β CM 3组 0 2 2 ;GSH组0 3。GSH组相对对照组差异显著 (P <0 0 5)。试验结果表明 β 酪啡肽对大鼠的免疫活性具有一定的促进作用  相似文献   

What is your diagnosis? Perineal mass in a dog          下载免费PDF全文

Amy L. Weeden  Jason D. Struthers  Serena L. M. Craft  Carlos H. de M. Souza  Nicole I. Stacy 《Veterinary clinical pathology / American Society for Veterinary Clinical Pathology》2016,45(2):385-386

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中草药组方对小鼠巨噬细胞吞噬力的影响   总被引：2，自引：0，他引：2  

张森涛  马新武 《动物医学进展》2000,21(4):57-58

选用黄芪，蒲公英，当归及益母草等中草药组成方１，选用黄芪，当归，蒲公英及玉不留行等中草药组成方２，经水煎过滤及浓缩，制成灌服液，分高量组（１ｍＬ／只．ｄ）及低量组（０．５ｍＬ／只．ｄ）胃管灌服小鼠，另设相应对照组，测定小鼠巨噬细胞吞噬力的变化。结果表明，方１低量组成高量组、方２低量组及高量组Ｍφ吞噬力均极显著的高于对照组。  相似文献   

人多形核白细胞杀灭类鼻疽杆菌的电镜观察   总被引：2，自引：0，他引：2  

宋阳  蒋忠军  佟世德 《中国兽医学报》2001,21(2):131-133

将类鼻疽杆菌纯培养物加入入脱纤血液中，置37℃水浴中模仿菌血症条件，分离含菌多形核白细胞（PMN）并进行电镜观察，结果表明，细菌吞入期其形态完整，吞噬全和菌体大小一致，随着杀灭功能的进行，天噬体变得很大，其内的细菌呈松散状，形态结构发生很大改变，可杀灭作用的后期，于吞噬全内仅见残留的细菌碎片，由此说明，健康入PMN非但不是类鼻疽杆菌潜藏的场所，而且能将其杀灭。  相似文献   

Evaluation of the prophylactic potential of an immunomodulator against respiratory disease in calves     

B. Larsson  C. Fossum  M. Trnquist  P. Matsson  S. Alenius 《Acta veterinaria Scandinavica》1985,26(2):262-272

The prophylatic effect against respiratory disease in feedlot calves of an immunomodulator, based on an inactivated avipox virus preparation, was evaluated in a double blind, placebo controlled field trial. The effect of the immunomodulator on phagocytosis and on the reactivity of the lymphocytes was also tested.On the day of arrival at the feedlots and 3 days later 257 calves were injected with either the immunomodulator or with placebo. All calves were then observed for respiratory disease and treatments were recorded. The immunomodulator did not reduce the frequency of disease, compared to the placebo. Thirty percent of the calves treated with the immunomodulator and 27 % of the controls were treated with antibiotics for respiratory disease.The cell mediated immune reactivity of 7 calves treated with the immunomodulator and of 7 untreated calves was tested. Monocytes isolated from the animals were examined for their ability to ingest latex beads and lymphocytes from the animals were examined for their response to different mitogens. Sera from each of the two groups were also investigated for the effect on phagocytosis. No difference in these parameters was observed between the two groups.  相似文献   

连翘酯苷对小鼠不同组织巨噬细胞功能的影响   总被引：1，自引：1，他引：0  

张永红 芦山陈舒楠  柴丽娜沈红 崔德凤 《中国农学通报》2013,29(17):32-36

目的 探讨连翘酯苷(FS)对小鼠不同组织巨噬细胞增殖和功能的影响。方法 取56只昆明系小鼠颈椎脱臼致死,无菌操作制备腹腔、骨髓和脾脏巨噬细胞,在体外细胞培养体系中分别加入不同浓度连翘酯苷（40、80、160mg.L-1）和脂多糖(LPS),通过MTT法检测细胞增殖,ELISA和Griess法分别检测细胞分泌TNF-α 和NO量,瑞氏-吉姆萨染色法测定腹腔巨噬细胞吞噬能力。结果 与LPS组比较,FS组腹腔巨噬细胞和LPS+FS组骨髓巨噬细胞吸光度A值极显著提高,但FS组脾脏和骨髓巨噬细胞以及LPS+FS组腹腔和脾脏巨噬细胞A值明显降低;此外,FS极显著提高环磷酰胺注射的小鼠脾脏和骨髓巨噬细胞增值但明显抑制腹腔巨噬细胞增殖。FS组不同组织巨噬细胞分泌TNF-α 量显著低于对照组和LPS组;FS明显增加LPS刺激的腹腔巨噬细胞NO分泌量,而脾脏巨噬细胞NO分泌量明显减少,且有显著剂量依赖性,骨髓巨噬细胞NO分泌量变化不明显;FS明显抑制环磷酰胺处理的小鼠脾脏和骨髓巨噬细胞分泌NO但不影响腹腔巨噬细胞分泌NO。FS提高了LPS刺激的腹腔巨噬细胞吞噬鸡红细胞能力。 结论 连翘酯苷对小鼠不同组织巨噬细胞增殖、TNF-α和NO分泌以及吞噬能力都有影响,这可能是连翘酯苷调节细胞免疫功能的机制之一。  相似文献   

Kinetic analysis of internalization of white spot syndrome virus by haemocyte subpopulations of penaeid shrimp,Litopenaeus vannamei (Boone), and the outcome for virus and cell          下载免费PDF全文

V V Tuan  G M A De Gryse  K V Thuong  P Bossier  H J Nauwynck 《Journal of fish diseases》2016,39(12):1477-1493

Little is known about the innate antiviral defence of shrimp haemocytes. In this context, the haemocytes of penaeid shrimp Litopenaeus vannamei (Boone) were separated by iodixanol density gradient centrifugation into five subpopulations (sub): sub 1 (hyalinocytes), sub 2 and 3 (prohyalinocytes), sub 4 (semigranulocytes) and sub 5 (granulocytes) and exposed to beads, white spot syndrome virus (WSSV) and ultraviolet (UV)‐killed WSSV. In a first experiment, the uptake of beads, white spot syndrome virus (WSSV) and UV‐killed WSSV by these different haemocyte subpopulations was investigated using confocal microscopy. Only haemocytes of sub 1, 4 and 5 were internalizing beads, WSSV and UV‐killed WSSV. Beads were engulfed by a much larger percentage of cells (91.2 in sub 1; 84.1 in sub 4 and 58.1 in sub 5) compared to WSSV (9.6 in sub 1; 10.5 in sub 4 and 7.9 in sub 5) and UV‐killed WSSV (12.9 in sub 1; 13.3 in sub 4; and 11.8 in sub 5). In a second experiment, it was shown that upon internalization, WSS virions lost their envelope most probably by fusion with the cellular membrane of the endosome (starting between 30 and 60 min post‐inoculation) and that afterwards the capsid started to become disintegrated (from 360 min post‐inoculation). Expression of new viral proteins was not observed. Incubation of haemocyte subpopulations with WSSV but not with UV‐killed WSSV and polystyrene beads resulted in a significant drop in haemocyte viability. To find the underlying mechanism, a third experiment was performed in which haemocyte subpopulations were exposed to a short WSSV DNA fragment (VP19) and CpG ODNs. These small DNA fragments induced cell death. In conclusion, WSSV is efficiently internalized by hyalinocytes, semigranulocytes and granulocytes, after which the virus loses its envelope; as soon as the capsids start to disintegrate, cell death is activated, which in part may be explained by the exposure of viral DNA to cellular‐sensing molecules.  相似文献   

“优鲈1号”大口黑鲈血细胞的形态特征及吞噬功能的研究     

赵柳兰  陈侨兰  杨淞  李胜杰  王艳  杜宗君 《南方水产科学》2016,(3):43-50

用Wright's染色及细胞化学方法,对"优鲈1号"大口黑鲈(Micropterus salmoides)外周血细胞形态特征进行观察,并通过吞噬实验分析其血细胞的免疫功能。结果表明血细胞可分为红细胞和白细胞,白细胞包括粒细胞(Ⅰ型、Ⅱ型和Ⅲ型粒细胞)、单核细胞、淋巴细胞及血栓细胞;其中红细胞数最多,白细胞较少;白细胞中,淋巴细胞比例最大(62.73%)。通过过碘酸-雪夫氏反应(PAS)、苏丹黑B(SBB)、酸性磷酸酶(ACP)、碱性磷酸酶(AKP)、过氧化物酶(POX)、酚氧化酶(PO)染色,红细胞染色均呈阴性,而白细胞除AKP、POX染色外,染色均呈阳性,且不同白细胞阳性染色程度不一致,其中血栓细胞染色均较强烈。吞噬实验表明,红细胞具有吞噬功能,吞噬率为(16.17±1.08)%;粒细胞和血栓细胞具黏附能力,且血栓细胞能形成黏附花环,这可能与血栓细胞形态多样性及糖原、脂类、ACP和PO有关。  相似文献   

Effects of Training on Phagocytic and Oxidative Metabolism of Peripheral Neutrophils in Horses Exercised in the Aerobic–Anaerobic Transition Area     

Escribano BM  Castejón FM  Vivo R  Santisteban R  Agüera EI  Rubio MD 《Veterinary research communications》2005,29(2):149-158

Using simple techniques, the neutrophil function, in its phagocytosis and oxidative metabolism stages, was evaluated in horses. This was done before and after moderate exercise at the aerobic-anaerobic threshold (standardized heart rate 150 beats/min and lactate level of 3.07 +/- 0.21 mmol/L). The objective was to determine whether regular training and moderate exercise improved the neutrophil function. A group of 19 horses was used; 11 of these were untrained and the remainder trained for national jumping events. The exercise test consisted of a 5 min trot followed by a 3 min gallop on a long lunge. Blood samples were taken for analysis before, immediately after and 15 min after exercise. The results showed that (a) there is a difference in the internalization of particles (PI, PP and PE) by neutrophils from trained and untrained horses at a single time point during active recovery, and PP is higher in trained horses immediately after exercise; and (b) oxidative metabolism is significantly lower in untrained animals before and 1 min after exercise. The moderate exercise at the aerobic-anaerobic threshold did not have any influence on the peripheral blood neutrophil function of the phagocytosis and oxidative metabolism of particles.  相似文献   

Changes in the phagocytic function of peritoneal macrophages from old mice after strenuous physical exercise   总被引：3，自引：0，他引：3  

M. de la Fuente  M. I. Martin  E. Ortega 《Comparative immunology, microbiology and infectious diseases》1990,13(4):189-198

The effect of acute physical exercise (swimming until exhaustion) on the phagocytic function of peritoneal macrophages from old adult BALB/c mice (55 ± 5 weeks old) was studied. Adherence capacity of macrophages to substrate, spontaneous mobility and chemotaxis as well as digestion capacity measured by nitroblue tetrazolium (NBT) reduction in presence of ingested material (latex beads) were not modified with exercise. Adherence to nylon fiber, opsonization and ingestion of Candida albicans (either spontaneous or in presence of serum), ingestion of latex particles as well as nitroblue tetrazolium (NBT) reduction in absence of ingested material (oxidative metabolism measure) were increased in respect to controls with statistically significant differences (P < 0.001) in peritoneal macrophages after the exercise.  相似文献